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Finding the Fourth Proportional to 1,043.26, 1,435.36 and 902.94

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Solution

The fourth proportional to 1,043.26, 1,435.36 and 902.94 is: 1,242.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,043.26 : 1,435.36 = 902.94 : x
  2. Step 2: Convert to fraction form
    1,043.26/1,435.36 = 902.94/x
  3. Step 3: Cross multiply
    1,043.26x = 1,435.36 × 902.94
  4. Step 4: Simplify right side
    1,043.26x = 1,296,043.96
  5. Step 5: Solve for x
    x = 1,296,043.96/1,043.26
  6. Step 6: Final answer
    x = 1,242.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.